Thanks. I took another look at your documentation and decided to re-install everything. You’re right, I’d used the simple “test” compose script from your site. After a little trial and error, I got everything working properly with this:

services:
  redis:
    image: redis:7-alpine
    container_name: journiv-redis
    restart: unless-stopped
    volumes:
      - /mnt/dietpi_userdata/docker-data/journiv/redis-data:/data
    command: redis-server --appendonly yes

  journiv:
    image: swalabtech/journiv-app:latest
    container_name: journiv
    ports:
      - "8111:8000"
    environment:
      - SECRET_KEY=XXX
      - DOMAIN_NAME=XXX
      - CELERY_BROKER_URL=redis://redis:6379/0
      - CELERY_RESULT_BACKEND=redis://redis:6379/0
      - REDIS_URL=redis://redis:6379/0
    volumes:
      - /mnt/dietpi_userdata/docker-data/journiv/data:/data
    restart: unless-stopped
    depends_on:
      - redis

  celery-worker:
    image: swalabtech/journiv-app:latest
    container_name: journiv-celery-worker
    entrypoint: []
    command: ["celery", "-A", "app.core.celery_app", "worker", "--loglevel=info"]
    environment:
      - SECRET_KEY=XXX
      - DOMAIN_NAME=XXX
      - CELERY_BROKER_URL=redis://redis:6379/0
      - CELERY_RESULT_BACKEND=redis://redis:6379/0
      - REDIS_URL=redis://redis:6379/0
    volumes:
      - /mnt/dietpi_userdata/docker-data/journiv/data:/data
    restart: unless-stopped
    depends_on:
      - redis
      - journiv

Exports are working!